|
| TABLE 4 | ||||||||
| INDUSTRIAL SAND AND GRAVEL PRODUCTION IN THE UNITED | ||||||||
| STATES IN 2007, BY SIZE OF OPERATION1 | ||||||||
| Quantity | ||||||||
| Number of | Percentage | (thousand | Percentage | |||||
| Size range | operations | of total | metric tons) | of total | ||||
| Less than 25,000 | 20 | 17 | 246 | (2) | ||||
| 25,000 to 49,999 | 13 | 11 | 413 | 1 | ||||
| 50,000 to 99,999 | 16 | 13 | 1,060 | 3 | ||||
| 100,000 to 199,999 | 18 | 15 | 2,170 | 7 | ||||
| 200,000 to 299,999 | 12 | 10 | 2,420 | 8 | ||||
| 300,000 to 399,999 | 9 | 7 | 2,850 | 9 | ||||
| 400,000 to 499,999 | 4 | 3 | 1,560 | 5 | ||||
| 500,000 to 599,999 | 4 | 3 | 2,010 | 6 | ||||
| 600,000 to 699,999 | 5 | 4 | 2,930 | 9 | ||||
| 700,000 and more | 16 | 13 | 14,400 | 47 | ||||
| Total | 117 | 100 | 30,000 | 100 | ||||
| 1Data are rounded to no more than three significant digits; may not add to totals shown. | ||||||||
| 2Less than � unit. | ||||||||
Source: United States Geological Survey Mineral Resources Program